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Basis of Presentation - Narrative (Details) - USD ($) $ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2023 | Jun. 30, 2022
Basis of Presentation [Line Items] |  |
Noncash software license acquisitions | $ 11 | $ 139
UScellular |  |
Basis of Presentation [Line Items] |  |
TDS ownership of UScellular | 83.00% |

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